Features.zoom value range Property
Set and get the zoom of motorized lenses.
Usage: 
[C#]
Feature.SetFeature("zoom value range", "10");
String Result = Feature.GetFeature("zoom value range");
Limitations:

usually only available on video capture devices with motorized lens.

Remarks:

The features zoom value range min and zoom value range max are used to query the boundaries of this feature.

See also: zoom value range min, zoom value range max

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